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Finding the Fourth Proportional to 122,285.79, 183,428.80 and 98,481.71

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Solution

The fourth proportional to 122,285.79, 183,428.80 and 98,481.71 is: 147,722.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,285.79 : 183,428.80 = 98,481.71 : x
  2. Step 2: Convert to fraction form
    122,285.79/183,428.80 = 98,481.71/x
  3. Step 3: Cross multiply
    122,285.79x = 183,428.80 × 98,481.71
  4. Step 4: Simplify right side
    122,285.79x = 18,064,382,099.62
  5. Step 5: Solve for x
    x = 18,064,382,099.62/122,285.79
  6. Step 6: Final answer
    x = 147,722.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.